low idle miss
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Junior User
Joined: Nov 2001
Posts: 72
Likes: 0
From: newberg us
low idle miss
My truck has a pretty bad low idle miss when its in gear and stopped. It's idling at about seven hundred. Its a 77 f-150 400 at. It's got a brand new distributor, and module. Could it be a wire or a bad plug. Any input would be great. IT's not at a rhythym just errratic. It acts like its going to die. It tends to idle at nine hundred when its out of gear and not very noticable at this point.
Elder User
Joined: Dec 2002
Posts: 925
Likes: 0
From: Quaker Hill ,CT U.S.A.
low idle miss
This is a long shot but I had a 351m that would do what your truck is doing and it turned out to be the intake! The P/O switched the inake for a edelbrock 4bbl job and well all of the intake bolts were loose ! Like Torque1st said look for leaks , but you may want to retorque the manifold anyways ,It is in the owners manual : retorque intake very 30,000 miles 
Jon
Jon
